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Formula: B
Form: Rod
Material: Boron
CAS Number: 7440-42-8
Commodity: Metals
Purity: 99.6%
Diameter: 5mm
Our Boron Rods are made from high-purity boron and are available in a range of diameters and lengths. With their extreme hardness, high elastic modulus and excellent corrosion resistance, these rods are used in specialized scientific and industrial applications. For example, they may be incorporated into control rods for nuclear reactors. Their ultra-high purity also makes them ideal for semiconductor manufacturing and other applications requiring impurity-free materials. With 13 size variations to choose from, our Boron Rods provide flexibility to meet diverse application requirements.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Rod
Diameter =<10mm ±10%
Diameter >10mm ±5%

Material Properties for Metals

Atomic Properties
Element Value
Atomic number 5
Crystal structure Tetragonal
Electronic structure He 2s² 2p¹
Valences shown 3
Atomic weight( amu ) 10.81
Thermal neutron absorption cross-section( Barns ) 672
Photo-electric work function( eV ) 4.5
Natural isotope distribution( Mass No./% ) 11/ 80.2
Natural isotope distribution( Mass No./% ) 10/ 19.8
Atomic radius - Goldschmidt( nm ) 0.097
Ionisation potential( No./eV ) 4/ 259
Ionisation potential( No./eV ) 2/ 25.2
Ionisation potential( No./eV ) 1/ 8.30
Ionisation potential( No./eV ) 5/ 340
Ionisation potential( No./eV ) 337.9
Mechanical Properties
Element Value
Hardness - Mohs 9.5
Material condition Arc melted
Tensile modulus( GPa ) 441
Tensile strength( MPa ) 1580-2410
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 1.8x10¹²@27@27°C
Physical Properties
Element Value
Boiling point( C ) 3700
Density( gcm⁻³ ) 2.34-2.37@20°C
Thermal Properties
Element Value
Melting point( C ) 2180
Latent heat of evaporation( J g⁻¹ ) 35000
Latent heat of fusion( J g⁻¹ ) 2090
Specific heat( J K⁻¹ kg⁻¹ ) 1030@25°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 8.3@0-100°C

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